CN102118183A - Power carrier communication method and device - Google Patents
Power carrier communication method and device Download PDFInfo
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- CN102118183A CN102118183A CN2009102396479A CN200910239647A CN102118183A CN 102118183 A CN102118183 A CN 102118183A CN 2009102396479 A CN2009102396479 A CN 2009102396479A CN 200910239647 A CN200910239647 A CN 200910239647A CN 102118183 A CN102118183 A CN 102118183A
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Abstract
A power carrier communication method includes the following steps: an information acquisition step, a synchronization status message step, an information processing step and a communication step, wherein in the information acquisition step, a physical layer receives a pilot frequency signal to obtain channel status messages; in the synchronization status message step, the physical layer and a data transmission control layer synchronize the channel status messages; in the information processing step, a required data packet capable of communicating is obtained according to the channel status messages; and in the communication step, a time period is occupied in turn to transmit the required data packet capable of communicating. The method and the device realize the layer optimization of power carrier communication, effectively promote the mutual cognition, mutual coordination and interaction between the physical layer and a data transmission control layer, achieve the high efficiency and the reliability of data transmission, and are beneficial to transmitting high-speed data, voice, images and other multimedia business signals in a power grid.
Description
[technical field]
The present invention relates to a kind of communication means and device, relate in particular to a kind of power line carrier, PLC method and device.
[background technology]
Intelligent grid carries out intellectualized reconstruction to traditional electrical network, and its utilizes the modern communication technology, advanced sensing and measuring technique, based on game theoretic mathematical optimization method, in real time electrical network is carried out distribution control, dispatching management and decision-making.
Of paramount importance a kind of communication technology is traditional power carrier communication system in the development of intelligent grid.Power carrier communication system is a kind of communication mode that utilizes multimedia services such as power distribution network low-voltage circuit transmitting high speed data, speech, image.Yet, because it is intrinsic to exist self institute on the net at low-voltage distribution, makes and to realize that thereon the high-efficiency reliable transfer of data is unusual difficulty.
In sum, utilize power line in the electrical network, can have signal attenuation, disturb assorted many, transmission environment is poor, impedance becomes big, time variation is big defective, realize that the high-efficiency reliable transfer of data is very difficult as communication channel.Therefore, be necessary the existing power carrier communication system is improved, to realize effective utilization of the high-efficiency reliable transfer of data and the communication resource.
[summary of the invention]
Based on this, be necessary to provide a kind of high-efficiency reliable power line carrier, PLC method and device.
A kind of power line carrier, PLC method comprises the steps: the information gathering step, obtains pilot signal, and obtains to send described node status information after the node status information according to described pilot signal; The information processing step receives described node status information and handles described node status information, adjusts node state; Communication steps communicates according to adjusted node state.
Preferably, described node status information comprises the modulus of channel status of channel condition information, the node of data packet transmission demand information, the node of node.
Preferably, described information gathering step and information processing step can the described node status information of Real-Time Sharing.
Preferably, described information processing step also comprises: the Data Transmission Controlling layer is the node set that needs transmits data packets and can nodes in communication gather the common factor of getting node.
Preferably, described information processing step also comprises the steps: to determine communication channel capacity according to described node status information; Compose with different weights according to the transfer level of packet; Determine the size of bandwidth according to the different weights of described channel capacity and packet.
Preferably, this communication steps adopts time-multiplexed mode, allows node take turns the holding time section and communicates.
In addition, also be necessary to provide a kind of high-efficiency reliable power line carrier, PLC device, comprise at least: information acquisition module is used to receive pilot signal and obtains node status information, and sends described node status information; Message processing module links to each other with described information acquisition module, is used to receive described node status information and handles described node status information, adjusts node state; Communication module links to each other with described message processing module, is used for communicating according to adjusted node state.
Preferably, described node status information comprises the modulus of channel status of channel condition information, the node of data packet transmission demand information, the node of node.
Preferably, described message processing module be further used in the channel condition information for can nodes in communication set and need the set of node conjunction of transmits data packets to occur simultaneously.
Preferably, described message processing module is further used for determining the capacity of communication channel and composing with different weights according to the transfer level of packet according to channel condition information, determines the size of bandwidth according to the different weights of described channel capacity and packet.
Preferably, it is characterized in that described communication module adopts time-multiplexed mode, allow node take turns the holding time section and communicate.
Preferably, described information acquisition module and described message processing module can the described node status information of Real-Time Sharing.
The present invention receives pilot signal, and to obtain channel condition information, the Data Transmission Controlling layer receives the channel condition information that is sent by physical layer in real time, obtains the packet that needs also can be communicated by letter according to described channel condition information, and transmits in channel; Physical layer and Data Transmission Controlling layer shared channel state information have realized the cross-layer optimizing of power line carrier, PLC, effectively promoted between physical layer and the Data Transmission Controlling layer mutual cognition, coordinate mutually and interact; The high efficiency and the reliability of transfer of data have been reached; Help multimedia service signals such as transmitting high speed data, speech, image in electrical network;
Existing network carries out the high efficiency of transmission of data in the application electrical network as communication channel, do not need electrical network is transformed on a large scale, do not need to carry out large-scale communication construction and can carry out active data communication, saved fund and guaranteed the high efficiency of transfer of data, made full use of electric power facility and brought into play the advantage of electric power resource;
From channel condition information, extract the modulus of channel status, Centroid to the circuit difference of node, load is different and be subjected to that annoyance level is different all can to produce mutually different channel status modulus, overcome on the power carrier line and can not discern the influence that load, signal attenuation and interference cause transfer of data, make the accurate identification channel state of Centroid, thereby reduced the transmission rate of packet, avoided network throughput to reduce and cause damage;
Capacity according to Centroid communication channel in the transmission of the channel status modulus of node size determination data bag, the amount of capacity of channel has determined the size of data transmission rate, importance according to packet is determined the needed bandwidth of transmits data packets by the objective optimization function, thereby reasonably optimize the distribution of bandwidth, make the bandwidth of transmits data packets consistent with data transmission rate, to satisfy the demand of network service to greatest extent, the communication system of power grids network bandwidth is fully used.
[description of drawings]
Fig. 1 is the communication subnet topological diagram on the intelligent grid;
Fig. 2 is the flow chart of power line carrier, PLC method;
Fig. 3 is the theory diagram of power line carrier, PLC device.
[embodiment]
Fig. 1 shows the communication subnet topological diagram on the intelligent grid, comprises Centroid and node in the communication subnet on the intelligent grid, and Centroid sends the packet that comes from other subnet on the intelligent grid to node.When packet arrives Centroid, at first to rank, each is the corresponding node of formation independently, and the task of Centroid is to arrange these packets in time to arrive the node of appointment by power line.
Fig. 2 shows a kind of flow chart of power line carrier, PLC method, and detailed process is as follows:
Step S1, information gathering is obtained pilot signal and is sent described node status information again according to described pilot signal acquisition node status information, comprising:
Physical layer receives the pilot signal that comes from the node, collects the state information of node.Node status information comprises the modulus of the channel status of the channel condition information of data packet transmission demand information, node of node and node.In the process of information gathering, collect state information to receive, and from node status information, extract the modulus h of the channel status of the channel condition information of data packet transmission demand information, node and node from Centroid to each node from the pilot signal of node.In the channel, circuit, load and all had nothing in common with each other by annoyance level, so the modulus of the channel status of each node is also different.One threshold value is set, if the modulus of the channel status of certain node is less than this threshold value, Centroid can not be communicated by letter to respective nodes so.In the intelligence communication subnet, Centroid has two instantaneous channel statuses to node, and is disconnected from passing to.
The modulus h of channel status is channel impulse response just, considers the transmission and the reception of baseband signal, does not promptly consider up-conversion and down-conversion, sends a pilot signal x in this way, through after the channel, can obtain following expression:
y＝h·x+n
Wherein, x is a plural number, and y is the signal that receives, and h is a channel impulse response, and n is the additive white Gaussian noise signal.
At this, if the recipient receives signal y, and know pilot signal x, the recipient can draw plural h so.
Step S2, information processing receives described node status information and handles described node status information, adjusts node state, comprising:
Step S21, the Data Transmission Controlling layer is the node set that needs transmits data packets and can nodes in communication gather the common factor of getting node.
Step S22 determines communication channel capacity according to described channel condition information.The capacity C of communication channel is by the size decision of the modulus of channel status, and the capacity C of channel reduces, and data transmission rate also can correspondingly reduce so.And according to different data transmission rates, the different chnnel coding of the employing of physical layer adaptive comes the corresponding data bag is carried out encoding and decoding.Communication channel capacity can obtain by following expression:
Wherein, W is a channel width, and N is the power of additive white Gaussian noise signal n, and E is a signal transmission power, and h is a channel impulse response.
Step S23 composes with different weights according to the transfer level of described packet.The packet that is transferred to node to needs is composed the importance of representing packet with weights α, can give different weights according to the type of packet, the time delay of packet requirement or the service quality (Quality of Service is called for short QoS) that packets need reaches.
Step S24 determines bandwidth according to the different weights of described channel capacity and packet.Distribution according to the capacity dynamic optimization bandwidth of the importance of this packet and communication channel.As shown in Figure 1, in the communication subnet of intelligent grid, the objective optimization function of Centroid to three node is
maxα
1C
1x
1+α
2C
2x
2+α
3C
3x
3
s.t.x
1+x
2+x
3＝1
X wherein
1, x
2And x
3Be need be transferred to normalization that the packet of three nodes is assigned with bandwidth, if a node does not have packets need transmission or center control nodes can't communicate by letter to the channel of a node at present, the bandwidth of so corresponding distribution then is 0, i.e. x
i=0, i=1,2, or 3.The objective optimization function can have a lot of different selections, and above-mentioned objective optimization function only be a kind of in numerous objective optimization functions, only provide with reference to and usefulness is described, be not to be used for the present invention is limited.
In the process of step S1 and step S2, information gathering step and information processing step can the described node status information of Real-Time Sharing, i.e. physical layer and data transfer layer synchronization node state informations.Physical layer provides node status information to the Data Transmission Controlling layer in real time.
Step S3, communication steps communicates according to adjusted node state.Adopt time-multiplexed mode, allow node take turns the holding time section and communicate.The Data Transmission Controlling layer is according to resulting amount of bandwidth high efficiency of transmission in channel in the objective optimization function, thereby reaches the purpose of optimizing allocated bandwidth.
Fig. 3 shows a kind of power line carrier, PLC device.The power line carrier, PLC device comprises: information acquisition module 100, message processing module 120 and communication module 140;
The modulus of channel status is channel impulse response just, considers the transmission and the reception of baseband signal, does not promptly consider up-conversion and down-conversion, sends a pilot signal x in this way, through after the channel, can obtain following expression:
y＝h·x+n
Wherein, x is a plural number, and y is the signal that receives, and h is a channel impulse response, and n is the additive white Gaussian noise signal.
At this, if the recipient receives y, and know x, the recipient can estimate plural h so.
Communication channel capacity can obtain by following expression:
Wherein, W is a channel width, and N is the power of additive white Gaussian noise signal n, and E is a signal transmission power, and h is a channel impulse response.
Weights α can give different weights according to the type of packet, the time delay of packet requirement or the service quality (Quality of Service is called for short QoS) that packets need reaches.
As shown in Figure 1, in the communication subnet of intelligent grid, the objective optimization function of Centroid to three node is
maxα
1C
1x
1+α
2C
2x
2+α
3C
3x
3
s.t.x
1+x
2+x
3＝1
X wherein
1, x
2And x
3Be need be transferred to normalization that the packet of three nodes is assigned with bandwidth, if a node does not have packets need transmission or center control nodes can't communicate by letter to the channel of a node at present, the bandwidth of so corresponding distribution then is 0, i.e. x
i=0, i=1,2 or 3, the objective optimization function can have a lot of different selections, above-mentioned objective optimization function only be a kind of in numerous objective optimization functions, only provide with reference to and usefulness is described, be not to be used for the present invention is limited;
The present invention receives pilot signal, and to obtain channel condition information, the Data Transmission Controlling layer receives the channel condition information that is sent by physical layer in real time, obtains the packet that needs also can be communicated by letter according to described channel condition information, and transmits in channel; Physical layer and Data Transmission Controlling layer shared channel state information have realized the cross-layer optimizing of power line carrier, PLC, effectively promoted between physical layer and the Data Transmission Controlling layer mutual cognition, coordinate mutually and interact; The high efficiency and the reliability of transfer of data have been reached; Help multimedia service signals such as transmitting high speed data, speech, image in electrical network;
Existing network carries out the high efficiency of transmission of data in the application electrical network as communication channel, do not need electrical network is transformed on a large scale, do not need to carry out large-scale communication construction and can carry out active data communication, saved fund and guaranteed the high efficiency of transfer of data, made full use of electric power facility and brought into play the advantage of electric power resource;
From channel condition information, extract the modulus of channel status, Centroid to the circuit difference of node, load is different and be subjected to that annoyance level is different all can to produce mutually different channel status modulus, overcome on the power carrier line and can not discern the influence that load, signal attenuation and interference cause transfer of data, make the accurate identification channel state of Centroid, thereby reduced the transmission rate of packet, avoided network throughput to reduce and cause damage;
Capacity according to Centroid communication channel in the transmission of the channel status modulus of node size determination data bag, the amount of capacity of channel has determined the size of data transmission rate, importance according to packet is determined the needed bandwidth of transmits data packets by the objective optimization function, thereby reasonably optimize the distribution of bandwidth, make the bandwidth of transmits data packets consistent with data transmission rate, to satisfy the demand of network service to greatest extent, the communication system of power grids network bandwidth is fully used.
The above embodiment has only expressed embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (12)
1. a power line carrier, PLC method comprises the steps:
The information gathering step is obtained pilot signal, and obtains to send described node status information after the node status information according to described pilot signal;
The information processing step receives described node status information and handles described node status information, adjusts node state;
Communication steps communicates according to adjusted node state.
2. power line carrier, PLC method according to claim 1 is characterized in that, described node status information comprises the modulus of channel status of channel condition information, the node of data packet transmission demand information, the node of node.
3. power line carrier, PLC method according to claim 1 is characterized in that, described information gathering step and information processing step can the described node status information of Real-Time Sharing.
4. power line carrier, PLC method according to claim 2 is characterized in that, described information processing step also comprises:
The Data Transmission Controlling layer is the node set that needs transmits data packets and can nodes in communication gather the common factor of getting node.
5. according to claim 2 or 4 described power line carrier, PLC methods, it is characterized in that described information processing step also comprises the steps:
Determine communication channel capacity according to described node status information;
Compose with different weights according to the transfer level of packet;
Determine the size of bandwidth according to the different weights of described channel capacity and packet.
6. according to each described power line carrier, PLC method in the claim 1 to 5, it is characterized in that this communication steps adopts time-multiplexed mode, allow node take turns the holding time section and communicate.
7. a power line carrier, PLC device is characterized in that, comprises at least:
Information acquisition module is used to receive pilot signal and obtains node status information, and sends described node status information;
Message processing module links to each other with described information acquisition module, is used to receive described node status information and handles described node status information, adjusts node state;
Communication module links to each other with described message processing module, is used for communicating according to adjusted node state.
8. power line carrier, PLC device according to claim 7 is characterized in that, described node status information comprises the modulus of channel status of channel condition information, the node of data packet transmission demand information, the node of node.
9. power line carrier, PLC device according to claim 7 is characterized in that, described message processing module be further used in the channel condition information for can nodes in communication set and need the set of node conjunction of transmits data packets to occur simultaneously.
10. according to claim 7 or 9 described power line carrier, PLC devices, it is characterized in that, described message processing module is further used for determining the capacity of communication channel and composing with different weights according to the transfer level of packet according to channel condition information, determines the size of bandwidth according to the different weights of described channel capacity and packet.
11. according to each described power line carrier, PLC device in the claim 7 to 10, it is characterized in that described communication module adopts time-multiplexed mode, allow node take turns the holding time section and communicate.
12. power line carrier, PLC device according to claim 7 is characterized in that, described information acquisition module and described message processing module can the described node status information of Real-Time Sharing.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355313A (en) * | 2011-10-19 | 2012-02-15 | 上海炜呈智能电力科技有限责任公司 | Power line communication method based on channel cognitive technology |
| CN102437867A (en) * | 2011-10-19 | 2012-05-02 | 上海炜呈智能电力科技有限责任公司 | Power line communication equipment based on channel cognitive technology |
| CN106533504A (en) * | 2015-09-11 | 2017-03-22 | 国网天津市电力公司 | Method for eliminating harmonic noise interference for power line carrier of fixed receiving-transmitting field with standard source |
| CN106533505A (en) * | 2015-09-11 | 2017-03-22 | 国网天津市电力公司 | Harmonic noise interference eliminating method for power line carrier with fixed receiving and transmitting sites |
| CN107810608A (en) * | 2015-06-11 | 2018-03-16 | At&T知识产权部有限合伙公司 | Repeater and the method for being therewith used for surface wave power line communication |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006101487A (en) * | 2004-09-02 | 2006-04-13 | Mitsubishi Materials Corp | Data communication system, data transmitting apparatus, data receiving apparatus, data communication method and data communication program |
| WO2009028729A2 (en) * | 2007-08-31 | 2009-03-05 | Panasonic Corporation | Communication apparatus and method |
-
2009
- 2009-12-31 CN CN200910239647.9A patent/CN102118183B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006101487A (en) * | 2004-09-02 | 2006-04-13 | Mitsubishi Materials Corp | Data communication system, data transmitting apparatus, data receiving apparatus, data communication method and data communication program |
| WO2009028729A2 (en) * | 2007-08-31 | 2009-03-05 | Panasonic Corporation | Communication apparatus and method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355313A (en) * | 2011-10-19 | 2012-02-15 | 上海炜呈智能电力科技有限责任公司 | Power line communication method based on channel cognitive technology |
| CN102437867A (en) * | 2011-10-19 | 2012-05-02 | 上海炜呈智能电力科技有限责任公司 | Power line communication equipment based on channel cognitive technology |
| WO2013056520A1 (en) * | 2011-10-19 | 2013-04-25 | 上海炜呈智能电力科技有限责任公司 | Power line communication method based on channel cognitive technology |
| CN102437867B (en) * | 2011-10-19 | 2014-01-15 | 上海炜呈智能电力科技有限责任公司 | Power line communication equipment based on channel cognitive technology |
| CN102355313B (en) * | 2011-10-19 | 2014-01-15 | 上海炜呈智能电力科技有限责任公司 | Power line communication method based on channel cognitive technology |
| CN107810608A (en) * | 2015-06-11 | 2018-03-16 | At&T知识产权部有限合伙公司 | Repeater and the method for being therewith used for surface wave power line communication |
| CN106533504A (en) * | 2015-09-11 | 2017-03-22 | 国网天津市电力公司 | Method for eliminating harmonic noise interference for power line carrier of fixed receiving-transmitting field with standard source |
| CN106533505A (en) * | 2015-09-11 | 2017-03-22 | 国网天津市电力公司 | Harmonic noise interference eliminating method for power line carrier with fixed receiving and transmitting sites |
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| CN102118183B (en) | 2014-03-26 |
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Effective date of registration: 20200914 Address after: 215500 No.13, Caotang Road, Changshu, Suzhou, Jiangsu Province Patentee after: Changshu intellectual property operation center Co.,Ltd. Address before: 1068 No. 518055 Guangdong city in Shenzhen Province, Nanshan District City Xili Road School of Shenzhen University Patentee before: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY |
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Correction item: Patentee|Address Correct: Shenzhen Institute of Advanced Technology|518055 No. 1068, Xueyuan Avenue, Shenzhen University Town, Xili, Nanshan District, Shenzhen, Guangdong, China False: Changshu Intellectual Property Operation Center Co.,Ltd.|215500 No. 13, Caodang Road, Changshu City, Suzhou City, Jiangsu Province Number: 40-02 Volume: 36 |
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